Good day guys. I need some help please.
My Marantz SR5006 av receiver went into protection mode. Opened it up, foid 2 shorted output transistors, as well as open circuit emmiter resistors. I replaced them all today, and getting a horrible distortion sound from that channel and I cannot set idling current. In the video link, it is not my amp, but it is the exact saem distortion I am getting from my amplifier front left channel. Go to 1:36 for the distortion sound
Replaced what I marked in red, still got the distortion
My Marantz SR5006 av receiver went into protection mode. Opened it up, foid 2 shorted output transistors, as well as open circuit emmiter resistors. I replaced them all today, and getting a horrible distortion sound from that channel and I cannot set idling current. In the video link, it is not my amp, but it is the exact saem distortion I am getting from my amplifier front left channel. Go to 1:36 for the distortion sound
Replaced what I marked in red, still got the distortion
The pcb layout is not very helpful. The schematic diagram is.
https://www.hifiengine.com/manual_library/marantz/sr5006.shtml
https://www.hifiengine.com/manual_library/marantz/sr5006.shtml
I'd say first check all the PN junctions in-circuit with your DVM.
If there's anything odd, compare it with the good channel.
If there's anything odd, compare it with the good channel.
Did that as well. Checked resistors and diodes with know good section of the board. That is where I came across the shorted zener diode. Very bad distortion, and cannot set idle current